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Transcript

## Site of drug action: - A drug may act: - **Extracellularly**: e.g. osmotic diuretics, plasma expanders - **On the cell surface**: e.g. digitalis, penicillin, catecholamines - **Inside the cell**: e.g. anti-cancer drugs, steroid hormones The plasma membrane is a semipermeable membran...

## Site of drug action: - A drug may act: - **Extracellularly**: e.g. osmotic diuretics, plasma expanders - **On the cell surface**: e.g. digitalis, penicillin, catecholamines - **Inside the cell**: e.g. anti-cancer drugs, steroid hormones The plasma membrane is a semipermeable membrane allowing certain chemical substances to pass freely e.g. it allows water, glucose, etc. but it won't allow sucrose until it is converted into glucose and fructose.

Tags

drug action pharmacology cell biology
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